of rockville



l .l @uiten vfaire Vggls'twt @ffice `A. H. BQY'D, OF ROCKVILLE, MASSACHUSETTS.

' Leners Patentlva. 69,753, dated october 15,1867.

DEVIGEFOR LOGKINGDOORS AND WINDOWS.

To ALL wHoM vIT MAY coNoERN:

Beit lrnown that I, A. H. BOYD, of Rockville, in Norfolk county, and State of Massachusetts-,have invented Van Improvement in Locking Doors and Windows; and I do hereby declare that the following, taken in connection with the drawings which accompany and form part of this specification, is a description of my invention suiiicient to enable those skilled in the art to practise it.v

The invention relates tb amethod of so securing doors and windows of houses as to enable them to be simultaneously fastened or unfastened, and prevent their being opened from the outside. With theiemployment of common door-locks, operated by keys, and from the outside as well as from the inside of the door, but very slight protection is a'orded by them against entrance, as expert burglars havno particular trouble in picking such locks. And where bolts or locks are so applied as only to be operated from the inside of doors-aud windows the protection is not4 much greater, as house-breakers easily'manage to obtainaccess to the mea-ns for shoving the bolts, and enter about as they please; common locks 'and bolts oering but slight hindrances to their operations. This is especially true` in hotels,,where many consecutive roomspall bolted upon the inside, are sometimes entered in one operation byburglars or hotel thieves.

The object of my inventionI is to secure any number of doors and windows by a system of locks or bolts, all connected with and so as to be operated from some central point in the house, provision being made for allowing each door or window to be opened from the inside, the means for effecting such opening being, however, preferably placed at such distance from the door as not to be accessible from the outside by reaching through with the arm. It is in such a system as this that my invention consists.

'.lo illustrate the same I have represented in the drawing asystemapplied to several doors and windows, the drawing showing a'horizontal section in line ofthe bolts. I l I a a denote ,several walls or partitions of a house; b b may be supposed to represent the windows of two rooms, and c c either the doors of two rooms or outer doors. To each door or window-frame, and projecting in to the partition or furring space, is a bolt, d, -playing through the frame, and shooting into a bolt-socket in the door or window, cach bolt' having a spring, e, attached to it, that throws the bolt into the idoor or window and locks it. From cach of these bolts a cord or wire, f, runs through suitable guides and sheaves to a. drum or cylinder, g, hung in suitable bearings, so' that by turning the drum all the cords or wires are simultaneously wound around its surface, and all the bolts thereby drawn back. One end-of the drumrshaft has an arm, h, to which is jointed a vertical rod or stem, z', which projects up into the room or oilice at whatever point it may be desirable to locate the device by which the system of bolts is controlled. The wires or cords, and the sheaves .and guides are locatedinthe partitions Vor walls, and between the doors and ceilings, and the drum to which they are all attached is placed beneath the'oor;'the whole arrangement, except the locking ends of the bolts and the operating end of the stem i, being enclosed in the same manner as are bell wires or gas pipes of a house, and forgreater security theymay be run through metal pipes. The bolt of each door and window is to be provided with means for operating it from the inside of the room, this means being a knob, k, or any other suitable device, and each bolt may also be so arranged that it may be l'connected with or disconnected from the system, as circumstances may render desirable.

To lock all the doors and windows connected with the system the stemi is raised, when the springs of th'e bolts-will shoot them into their sockets, while they may be simultaneously withdrawn by depressing the A stem.

The provision for operating the bolts may, of course, be greatly modified and varied from that shown, which is'merelyintended to represent the simplest organization of the system. By this system either the doors and.

windows of a single room, or all those of a house, or any number of such doors and windows may be kept fastcned at proper times from one central point, and in such manner that all the bolts shall be inaccessible, except to occupants of the rooms, and at the centre of the system.

I am aware that a mechanism has been devised for effecting the release of a series of store-shutters from their bolt fastenings at one point, so that when the bolts are simultaneously withdrawn the shutters may be simultaneously thrown open by springs. But such arrangement had no provision for locking a series of windows,

' doors, or shutters from one'point, and was incapable of effecting a simultaneous locking of bolts. The principal object of my arrangement is to enable me to secure all the doors and windows at once, and from one point, though I find it essential to also have a provision for simultaneously releasing them.

I claim the system of bolts so connected and arranged that all the bolts may be simultaneously operated frein one point, both to lock and unlock, each bolt also having an independent provision for operating it from the inside of the room, all substantially as set forth.

' A. H. BOYD.

Witnessesi F. GotJLD. L. H. Lumen. 

